Understanding Outcomes with the S-ICD in Primary Prevention Patients with Low EF Study (UNTOUCHED): Clinical characteristics and perioperative results  Lucas V. Boersma, MD, PhD, Mikhael F. El-Chami, MD, FHRS, Maria Grazia Bongiorni, MD, Martin C. Burke, DO, Reinoud E. Knops, MD, PhD, Johan D. Aasbo, DO, FHRS, Pier D. Lambiase, PhD, FHRS, Jean Claude Deharo, MD, Andrea M. Russo, MD, FHRS, Jay Dinerman, MD, Naushad Shaik, MD, FHRS, Craig S. Barr, MD, Nathan Carter, MS, Ursula Appl, BSBME, Amy J. Brisben, PhD, Kenneth M. Stein, MD, FHRS, Michael R. Gold, MD, PhD, FHRS  Heart Rhythm  DOI: 10.1016/j.hrthm.2019.04.048 Copyright © 2019 Terms and Conditions

Figure 1 Patient status through 30 days. See Supplemental Table 5 for reasons for study withdrawal. Heart Rhythm DOI: (10.1016/j.hrthm.2019.04.048) Copyright © 2019 Terms and Conditions

Figure 2 Linear predictor model: factors affecting procedure time. A: Univariable model. B: Multivariable model. BMI = body mass index; DFT = defibrillation testing; LVEF = left ventricular ejection fraction. Heart Rhythm DOI: (10.1016/j.hrthm.2019.04.048) Copyright © 2019 Terms and Conditions

Figure 3 UNTOUCHED defibrillation testing (DFT). Notes: aOne patient withdrawn, no information on DFT. bTwo patients were first unsuccessful at 80 J, then pocket revision with subsequently successful DFT. Both patients completed follow-up without spontaneous episodes. cOne patient: device explanted at day 41. One patient: electrode repositioned 42 days after implant; DFT reperformed and successful; patient has successfully completed study. One patient: completed follow-up without any spontaneous episodes. Heart Rhythm DOI: (10.1016/j.hrthm.2019.04.048) Copyright © 2019 Terms and Conditions

Figure 4 Freedom from complications. Kaplan-Meier analysis for freedom from subcutaneous implantable defibrillator system- or procedure-related complications for the first 30 days postimplant. Heart Rhythm DOI: (10.1016/j.hrthm.2019.04.048) Copyright © 2019 Terms and Conditions